Home / 236,611.20-354,830.40-78,844.80

Finding the Fourth Proportional to 236,611.20, 354,830.40 and 78,844.80

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Solution

The fourth proportional to 236,611.20, 354,830.40 and 78,844.80 is: 118,238.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,611.20 : 354,830.40 = 78,844.80 : x
  2. Step 2: Convert to fraction form
    236,611.20/354,830.40 = 78,844.80/x
  3. Step 3: Cross multiply
    236,611.20x = 354,830.40 × 78,844.80
  4. Step 4: Simplify right side
    236,611.20x = 27,976,531,921.92
  5. Step 5: Solve for x
    x = 27,976,531,921.92/236,611.20
  6. Step 6: Final answer
    x = 118,238.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.